Here’s something I never thought about before – pasta shapes actually matter. Rigatoni pesto works so well because of those little tubes and ridges. They’re like tiny cups that hold the pesto inside.
I tested this myself. I made the same pesto and tried it with different pasta shapes. Spaghetti? The sauce just slid off. Penne? Better, but not great. But rigatoni? Every single bite was packed with flavor.